<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        li {
            list-style: none;
        }
        
        .box p {
            color: red;
        }
    </style>
</head>

<body>
    <div class="box">
        <ul>
            <li>
                <p>我是段落</p>
            </li>
        </ul>
        <p>我是段落</p>
        <p>我是段落</p>
        <p>我是段落</p>
    </div>

    <p>我是段落</p>
    <p>我是段落</p>
    <p>我是段落</p>
</body>

</html>